We've created this Forum Thread with some workarounds and advice to assist you in publishing you ebook.
rgb or cymk images
I have been making calendars on Lulu for a few years now and a couple of times I have had problems with the pinks having a blue cast to them. When I contacted Lulu about this they said that I need to have the images in CYMK format rather than RGB. Is that still the case? I need them quickly this year and don't have time to mess with a misprinted one. All of my images are in RGB format, so I would need to learn how to convert them, but I was wondering if perhaps this is no longer a problem for Lulu? Below is an example of an image that I THINK I converted to CYMK, but I am not sure if it will work or not. The last thing I want is for my pink flowers to be blue!!
Gunter Mountain Photography